Olum, P. (1961). Invariants for effective homotopy classification and extension of mappings. American Mathematical Society.
Style de citation Chicago (17e éd.)Olum, Paul. Invariants for Effective Homotopy Classification and Extension of Mappings. Providence: American Mathematical Society, 1961.
Style de citation MLA (8e éd.)Olum, Paul. Invariants for Effective Homotopy Classification and Extension of Mappings. American Mathematical Society, 1961.
Attention : ces citations peuvent ne pas être correctes à 100%.